Phillip's Basic Glasses AV 2000
The basic design is plastic, smoke gray, safety frames with permanently attached side shields, have been a safety glasses industry standard for many years.
Whether you know them as AV 2000, Phillips 202, or one of several other trade names, ACE is the name Schott calls their most popular lampworking filter lens. ACE exceeds light filtering in the UV (ultra violet), near IR (infrared) and sodium flare spectrums than the old rose didymium lenses. Sodium flare is the bright yellow orange light that hot glass produces while in the flame, It is also what irritates and fatigues your eyes the most. In addition, ACE color enhances red, blue and green, making it easier to see a glass' true color and judge its temperature while you work.
The basic design does not fit over regular glasses!